English

Elastic $pp$ and $\bar pp$ scattering in the models of unitarized pomeron

High Energy Physics - Phenomenology 2008-11-26 v3 High Energy Physics - Experiment

Abstract

Elastic scattering amplitudes dominated by the Pomeron singularity which obey the principal unitarity bounds at high energies are constructed and analyzed. Confronting the models of double and triple (at t=0t=0) Pomeron pole (supplemented by some terms responsible for the low energy behaviour) with existing experimental data on pppp and pˉp\bar pp total and differential cross sections at s5\sqrt{s}\geq 5 GeV and t6|t|\leq 6 GeV2^{2} we are able to tune the form of the Pomeron singularity. Actually the good agreement with those data is received for both models though the behaviour given by the dipole model is more preferable in some aspects. The predictions made for the LHC energy values display, however, the quite noticeable difference between the predictions of models at t0.4t\approx -0.4 GeV2^{2}. Apparently the future results of TOTEM will be more conclusive to make a true choice.

Keywords

Cite

@article{arxiv.hep-ph/0703248,
  title  = {Elastic $pp$ and $\bar pp$ scattering in the models of unitarized pomeron},
  author = {E. Martynov},
  journal= {arXiv preprint arXiv:hep-ph/0703248},
  year   = {2008}
}

Comments

Revtex4, 8 pages, 5 figures. Text is improved, no changes in figures and conclusions. Version to be published in Phys. Rev. D